How to trigger jquery.ajax() error callback based on server response, not HTTP 500?

Question

By using jquery ajax function, I can do something like:

$.ajax({

  url: url,
  type: \'GET\',
  async: true,
  dataType: \'json\',
  data: data,

 success:          


        

Answer 1

Simplest thing to do would be to restructure like so:

function handleAjaxError function(xhr, status, error) {
    //Handle failure here
}

$.ajax({
  url: url,
  type: 'GET',
  async: true,
  dataType: 'json',
  data: data,

  success: function(data) {

     //Handle server response here
    if (data.message == 'There is an error')
    {
        handleAjaxError();
        return;
    }

    //... all is good....

  },
  error: handleAjaxError
});